Anhydrous stemming and preparation method thereof
A technology of anhydrous taphole clay and bauxite, which is applied in the production of ceramic materials to achieve the effect of increasing bulk density and enhancing anti-scour ability.
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[0029] The preparation method of anhydrous tap clay as above, comprises the following steps:
[0030] First, the solid raw materials are mixed and stirred evenly, and then the liquid raw materials are added to continue stirring. After stirring evenly, a mud-like semi-finished product is obtained.
[0031] In the prior art, screw extrusion molding equipment is generally used to extrude anhydrous taphole clay. Since the raw material is easy to block the screw, a certain obstacle is caused to the extrusion of the taphole clay, and the bulk density of the molded taphole clay is affected. The application adopts the hydraulic extrusion method, which can provide a pressure of more than 10Mpa to directly extrude the clay from the extrusion port. The density of anhydrous taphole clay can be 1.8 ~ 2.0g / cm 3 Raised to 2.4g / cm 3 about.
[0032] The hydraulic taphole clay extrusion equipment preferably adopts the waterless taphole clay extrusion molding device provided by CN202120606869...
Embodiment 1
[0036] The anhydrous taphole clay provided by the present embodiment is prepared from the following raw materials by weight:
[0037] 15 parts of bauxite and 15 parts of pyrophyllite with an average particle size of 2mm;
[0038] 10 parts of bauxite and 10 parts of silicon carbide with an average particle size of 0.5 mm;
[0039] 3 parts of kyanite with a sieving mesh number of not less than 80 meshes;
[0040] 8 parts of 200 mesh bauxite, 6 parts of silicon carbide, 11 parts of ferrosilicon nitride, 9 parts of ball clay, and 2 parts of graphite;
[0041] 3 parts of thermosetting phenolic resin, 7 parts of modified asphalt, 12 parts of tar, and 4 parts of nano-silica sol.
[0042] Among them, Al in bauxite 2 O 3 The mass percentage is 91%, the mass percentage of SiC in silicon carbide is 94%, and the Al in ball clay 2 O 3 The mass percentage is 46%.
[0043] The preparation method of anhydrous tap clay as above, comprises the following steps:
[0044] First mix the sol...
Embodiment 2
[0048] The anhydrous taphole clay provided by the present embodiment is prepared from the following raw materials by weight:
[0049] 15 parts of bauxite and 15 parts of pyrophyllite with an average particle size of 2mm;
[0050] 10 parts of bauxite and 10 parts of silicon carbide with an average particle size of 0.5 mm;
[0051] 3 parts of kyanite with a sieving mesh number of not less than 80 meshes;
[0052] 8 parts of 200 mesh bauxite, 5 parts of silicon carbide, 12 parts of ferrosilicon nitride, 9 parts of ball clay, and 2 parts of graphite;
[0053] 3 parts of thermosetting phenolic resin, 7 parts of modified asphalt, 12 parts of tar, and 3 parts of nano-silica sol.
[0054] The preparation method of anhydrous tap clay as above, comprises the following steps:
[0055] First mix the solid raw materials, stir at 110°C for 40 minutes, then add liquid raw materials and continue to stir, after stirring for 30 minutes, a mud-like semi-finished product is obtained. , to obt...
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